Pile Design and Construction Practice, Fifth edition

Table 8.4

Calculations for current and wave forces in Example 8.3

Elevation

Average

Pile

Current

Wave drag

Wave inertia

Total

Horizontal

Bending moment

(m) (CD)

height

diameter

Velocity

Force

(u/C)

2

Force

Force

force

load on

(kNm)

above sea

(m)

(m/s)

(kN/m

2 )

(kN/m

2 )

(kN/m

2 )

(kN/m

2 )

element

bed (m)

(kN)



7.5

-^



5.5

13

0.610

1.2

0.36

1.18

0.21

9.01

0.26

2.54

11.91

14.53



14.5

210.69



5.5

-^



3.5

11

0.610

0.8

0.16

1.00

0.18

7.72

0.21

2.05

9.93

12.15



12.5

151.87



3.5

-^



1.5

9

0.680

0.6

0.09

0.82

0.15

6.43

0.17

1.85

8.37

11.38



10.5

119.49



1.5

-^



0.5

7

0.680

0.4

0.04

0.64

0.13

5.58

0.14

1.52

7.14

9.71



8.5

82.53



0.5

-^



2.5

5

0.680

0.3

0.02

0.45

0.12

5.15

0.12

1.31

6.48

8.81



6.5

57.25



2.5

-^



4.5

3

0.800

0.25

0.01

0.27

0.11

4.72

0.11

1.41

6.14

9.82



4.5

44.19



4.5

-^



6.5

1

0.800

0.25

0.01

0.09

0.11

4.72

0.11

1.41

6.14

9.82



2.5

24.55

Maximum bending moment (at



6.5 m) in kN m

690.57

z h

1 g

du·dt